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WO2009152263A1 - Enveloppe électrique thermoplastique - Google Patents

Enveloppe électrique thermoplastique Download PDF

Info

Publication number
WO2009152263A1
WO2009152263A1 PCT/US2009/046937 US2009046937W WO2009152263A1 WO 2009152263 A1 WO2009152263 A1 WO 2009152263A1 US 2009046937 W US2009046937 W US 2009046937W WO 2009152263 A1 WO2009152263 A1 WO 2009152263A1
Authority
WO
WIPO (PCT)
Prior art keywords
lid
box
tongue
closed position
dog
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2009/046937
Other languages
English (en)
Inventor
Christopher Brizes
James Mcwilliams
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2009152263A1 publication Critical patent/WO2009152263A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/46—Boxes; Parts thereof or accessories therefor

Definitions

  • the disclosure relates to electrical enclosures formed of thermoplastic.
  • an electrical enclosure houses electrical components, electronics, or other devices or paraphernalia that require some degree of protection from dust, water, elements, environment, etc.
  • An electrical enclosure must:
  • BMC bulk molding compound
  • NEMA National Electrical Manufacturers Association
  • the enclosure shown in U.S. Patent 7,224,283 also has a tongue with apertures that receive projections from the side of the housing when the door is fully closed. This arrangement has proven hard to use since a tool is necessary to pry the tongue out of contact with the projections before the door can be opened.
  • thermoplastic electrical enclosure comprising a box and a lid.
  • the box has opposed front and back walls, side walls connected to the front and back walls and a bottom integrally formed with the front, side and back walls.
  • the sidewalls have top edges at least partially defining an opening at the top of the box.
  • the lid has a top wall and a peripheral wall configured to engage the top edges of the side walls of the box.
  • a resilient seal is disposed between the peripheral wall of the lid and the top edges of the walls of the box.
  • a hinge connects the lid to the box.
  • the hinge comprises a rod element defining a hinge axis and is integrally formed with one of the lid and box.
  • the hinge also comprises a hook element proportioned to engage the rod element, the hook element being integrally formed with the other of the box and lid.
  • the hinge is positioned along the back wall of the box and enables the lid to rotate about the hinge axis between open and closed positions.
  • the enclosure further includes a snap closure that can be manually operated.
  • the snap closure includes a dog projecting from the front wall of the box and a tongue extending from the lid and having an opening to receive the dog.
  • the tongue has a proximal portion and a distal extension.
  • the proximal portion of the tongue is integrally formed with the lid.
  • the distal extension forms a finger lift portion.
  • the finger lift portion is integrally formed with the proximal portion and extends at an angle to the front wall of the box.
  • the opening in the tongue is located between the terminal edge of the tongue and the peripheral seat of the lid.
  • the finger lift portion has a terminal edge sufficiently far from where the tongue joins the lid and spaced from the front wall of the box when the lid is in the closed position to enable manual release of the hole from the dog.
  • the tongue may instead extend from the box with the dog projecting from the lid, depending on the depth of each.
  • FIC. 1 is a perspective illustration of an electrical enclosure made following the teachings of this disclosure with the lid closed on the box.
  • Figure 2 is a perspective illustration of the enclosure of Figure 1 showing the lid opened to reveal the interior of the box.
  • Figure 3 is a perspective illustration of the lid viewed from below showing a tongue that forms part of the lid with a finger lift.
  • Figure 4 is a perspective illustration of a box viewed from above forming a part of the enclosure of Figure 1 .
  • Figure 5 is a cross-sectional view of portions of the lid and box of Figure 1 .
  • Figure 1 illustrates an electrical enclosure 10 constructed following the teachings of this disclosure.
  • the enclosure 1 0 (except for a gasket described below) is fabricated entirely of a thermoplastic material, providing resistance to impact, flame, water, and corrosion sufficient to meet the NEMA 4x standard.
  • the enclosure is thus free of metal inserts to receive screws, inserts which add considerably to the cost of manufacturing enclosures that require them.
  • the enclosure includes a box 1 2 and a lid 14.
  • the box 12 and lid 14 are connected by a hinge 1 6 which allows the lid to move between a closed position shown in Figure 1 and an open position shown in Figure 2.
  • a snap closure 1 8 ( Figure 1 ) secures the lid in a closed position.
  • the box 1 2 includes a bottom 24 ( Figure 2), side walls 26 and 28, back wall 30, and front wall 32. These walls may either join each other directly or may be joined by short diagonal walls 34, 36, 38, and 40, as shown. However the front, back, and side walls are joined to the bottom 24, the result is a container that has only an open top, with seams between the walls and bottom that are water tight and air tight.
  • the box 1 2 may conveniently be of unitary construction formed in an injection molding process using a thermoplastic material such as BMC or a polycarbonate.
  • a polycarbonate such as PCUV-C3
  • the box 14 may be air and water tight as initially formed, it is understood that, in general, openings may be made to accommodate wires that must pass through the walls of the box. Those of ordinary skill in the art know and appreciate how to make these openings air and water tight if the application requires it.
  • the box 12 also includes a pair of mounting flanges 42 that project as shown in Figures 1 and 2 flush with the bottom wall 24. Such positioning of the flanges 42 may be convenient for most applications. By making the appropriate changes in the tooling, the flanges 42 can be positioned elsewhere if a particular application requires it, or eliminated entirely.
  • the lid 14 (Figure 3) is made of thermoplastic material such as the polycarbonate PCUV-3C.
  • the lid 14 includes a generally planar top wall 46 and a peripheral wall 48.
  • the peripheral wall 48 is shaped to follow the contours of the top edges of the walls 26, 28, 30, 32, 34, 36, 38, and 40 ( Figure 2) of the box 12.
  • the lower edge of the peripheral wall 48 includes a slot 50 ( Figures 3 and 5) which receives the top edge 52 of the walls 26-40 of the box 12, as well as a resilient gasket 54.
  • a short stub wall 56 may rise inside the slot 50 to assure the gasket 54 is properly compressed when the lid is in the closed position.
  • the box 1 2 and lid 14 are joined by a hinge 16.
  • Figure 1 The hinge 16 permits the lid 14 to rotate 180° or more from the closed position shown in Figure 1 through the partially open position shown in Figure 2 to a fully open position allowing easy access to the interior of the enclosure 10.
  • the hinge 16 includes a series of coaxial rods at 62 ( Figure 4) supported by flanges 64 that project from the backwall 30 of the box 12. The flanges 64 are located so that the axis of the rods is approximately coplanar with the top edge 52 of the walls 26-40 of the box 1 2.
  • the lid 14 ( Figure 3) carries hooks 66 projecting from the lid.
  • the hooks 66 snap over the rods 62 and enable the lid to rotate about the axis of the rods from an open position as shown in Figure 2 to the closed position shown in Figure 1 .
  • the hooks are integral with the lid, and made of the same thermoplastic material. It will be readily appreciated that the hooks and rods could easily be reversed, with the rod elements being part of the lid 14 and the hook elements being part of the box 1 2.
  • the snap closure 18 includes a tongue 72 that projects from the lid 14 and dogs 74 that extend outward from the front wall 32 of the box 12.
  • the tongue 72 has a proximal portion 76 that is integral with the peripheral wall 48 of the lid 14 and is positioned so that it is generally parallel to the front wall 32 of the box 12 when the lid is in the closed position.
  • the dogs 74 each have a ramp shape with an inclined surface 80 rising away from the front wall 32 of the box 1 2 and a bottom wall 82 that is generally normal to the front wall of the box.
  • the openings 78 in the tongue each are defined in part by a respective bottom surface 89 that mates with the bottom wall 82 of the dogs.
  • the tongue 72 rides up along the inclined surface 80, the tongue bending elastically as it does so, until the bottom surface 89 of the opening 78 reaches and snaps over the bottom wall 82 of the dogs 74.
  • the bottom surface 89 and a bottom wall 82 are essentially parallel to each other and perpendicular to the direction of any force that would tend open the lid, and they are effective to hold the lid closed.
  • the box 1 2 includes a peripheral stop surface 88 that surrounds the top edge 52 of the box 12.
  • the stop surface 88 is located so that it engages the bottom face 90 of the peripheral wall 48 of the lid 14 when the gasket 54 has been compressed the desired amount. Cooperation between the stop surface 88 in the bottom face 90 thus prevents over compression of the gasket 54.
  • the opening 78 snaps over the bottom wall 82 of the dogs only when the bottom face 90 of the lid contacts the stop surface 88.
  • the tongue 72 has a finger lift 96 that makes it possible to manually release the proximal portion 76 of the tongue from the dogs 74.
  • the finger lift 96 is integral with the proximal portion 76 and extends at an angle of about 30!
  • the angle of the finger lift creates a space 98 between the bottom edge 100 and front wall 32 of the box 12.
  • the bottom edge 100 is far enough away from the bottom face 90 of the peripheral wall 48 of the lid that it provides sufficient mechanical advantage to enable a worker to prise the tongue 72 away from the front wall 32 of the box using his or her fingertips; no tool is required.
  • the proximal portion 76 of the tongue 72 is a rectangular planar element, and the finger lift 96 is similarly shaped.
  • the two openings 78 (and the two dogs 74) are spaced apart to distribute compressive forces on the gasket 54.
  • a box that is larger or smaller than the box 12 may require more or fewer openings and dogs.
  • the enclosure also is provided with a matching pair of ears or hasp members 102 and 104 which extend from the finger lift 96 and the box 12, respectively.
  • the ears 102 and 104 line up when the lid 14 is in the closed position.
  • Each ear includes a through hole which aligns with its mate when the lid is closed so that a fastener or locking device may be inserted.
  • the depth of the box and lid may be varied to accommodate different applications. With a lid of sufficient depth, the dogs 74 could project from the lid and the tongue could form an extension of the box. Viewed another way, this is the approximate equivalent of placing the mounting flanges on the Md, rather than on the box, as shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Casings For Electric Apparatus (AREA)

Abstract

L’invention concerne une enveloppe électrique constituée d’un matériau thermoplastique, tel qu’un matériau polycarbonate. L’enveloppe comprend un boîtier et un couvercle articulé sur le boîtier, le long de son bord arrière. Un bord supérieur du boîtier et un bord inférieur du couvercle sont formés de manière à venir en prise l’un avec l’autre et à maintenir un joint d’étanchéité élastique, lorsque le couvercle est fermé. Le couvercle peut être déplacé entre une position ouverte et une position fermée. Le couvercle est maintenu dans la position fermée par un agencement d’attache constitué d’une patte et d’un ergot. Le couvercle ou le boîtier présente un ergot faisant saillie depuis le bord avant du boîtier, tandis qu’une patte élastique fait saillie depuis l’autre élément parmi le boîtier et le couvercle. La patte présente une ouverture qui reçoit l’ergot lorsque le couvercle est fermé, afin de maintenir le couvercle fermé.
PCT/US2009/046937 2008-06-10 2009-06-10 Enveloppe électrique thermoplastique Ceased WO2009152263A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/136,440 2008-06-10
US12/136,440 US20090303666A1 (en) 2008-06-10 2008-06-10 Thermoplastic electrical enclosure

Publications (1)

Publication Number Publication Date
WO2009152263A1 true WO2009152263A1 (fr) 2009-12-17

Family

ID=41400097

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/046937 Ceased WO2009152263A1 (fr) 2008-06-10 2009-06-10 Enveloppe électrique thermoplastique

Country Status (2)

Country Link
US (1) US20090303666A1 (fr)
WO (1) WO2009152263A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5799814B2 (ja) * 2012-01-10 2015-10-28 富士通株式会社 電子機器
US8899432B2 (en) * 2012-03-01 2014-12-02 Thomas & Betts International, Inc. Load dispersing member for while-in-use electrical box cover
CN103457167B (zh) * 2013-09-02 2016-05-18 国家电网公司 利用abb刀闸切换钥匙实现发电机防误闭锁的方法
GB2545256B (en) * 2015-12-11 2019-01-09 Electrix International Ltd An electrical component enclosure with a hygienic hinge
US10267610B2 (en) * 2016-07-13 2019-04-23 Luis Pacheco Locking system for an ammunition can
WO2019092303A1 (fr) * 2017-11-08 2019-05-16 Ensto Oy Enceinte en plastique pour contenir des composants industriels
CN114094535B (zh) * 2021-11-04 2023-08-15 国网河北省电力有限公司石家庄供电分公司 一种可插拔高压电缆接地箱

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5084596A (en) * 1990-06-04 1992-01-28 The Lamson & Sessions Co. Electrical box
US5245507A (en) * 1992-04-17 1993-09-14 Pro-Mark, Inc. Weather resistant container for timer components of an irrigation system
JPH08244814A (ja) * 1995-03-10 1996-09-24 Kao Corp 容 器
US5938063A (en) * 1997-06-30 1999-08-17 Hoftman; Moshe Hinged, latchable box as for medical sharps
US6006941A (en) * 1995-10-10 1999-12-28 Proloc Security Systems Pty Limited Security container
US20050072588A1 (en) * 2003-10-07 2005-04-07 Hull Eric G. Mud box and adapters

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4342493A (en) * 1978-12-18 1982-08-03 Allen-Stevens Corp. Weather-resistant arrangement for outdoor electrical devices
US5317108A (en) * 1992-12-15 1994-05-31 L.E. Mason Company Weather-resistant electrical outlet cover assembly
US5731544A (en) * 1994-01-03 1998-03-24 Mulberry Metal Products, Inc. Electrical outdoor outlet cover
US6815612B2 (en) * 2002-10-18 2004-11-09 Corning Cable Systems Llc Watertight seal for network interface device
US7075443B1 (en) * 2003-09-29 2006-07-11 Chandler Systems, Inc. Wastewater fluid level sensing and control system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5084596A (en) * 1990-06-04 1992-01-28 The Lamson & Sessions Co. Electrical box
US5245507A (en) * 1992-04-17 1993-09-14 Pro-Mark, Inc. Weather resistant container for timer components of an irrigation system
JPH08244814A (ja) * 1995-03-10 1996-09-24 Kao Corp 容 器
US6006941A (en) * 1995-10-10 1999-12-28 Proloc Security Systems Pty Limited Security container
US5938063A (en) * 1997-06-30 1999-08-17 Hoftman; Moshe Hinged, latchable box as for medical sharps
US20050072588A1 (en) * 2003-10-07 2005-04-07 Hull Eric G. Mud box and adapters

Also Published As

Publication number Publication date
US20090303666A1 (en) 2009-12-10

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